I've had APS-C, I've had (am selling?) full frame. I never thought I would buy an four/thirds camera. I thought the format was stupid when it was first announced. Well. Here I am. And I've got the darnedest grin. My first digital camera was an Oly C-8080 with a 2/3" sensor. I loved that thing. It had a flip out screen, an EVF, a great lens, and took nice pictures (for the time :smile . Since that time, I've had Canon APS-C, Canon Full Frame, Nikon APS-C, Pentax APS-C, Nikon Full Frame, Fuji APS-C (I tried both the X-E1 and X-Pro1). Wow, that list is long. Well now I'm back with an Oly with a flip out screen and an EVF, a great lens, and it takes great pictures. And I don't hate the format.